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Joined: Feb 2009
Posts: 4,870 Likes: 5
Campfire Tracker
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Campfire Tracker
Joined: Feb 2009
Posts: 4,870 Likes: 5 |
A number of years ago I inherited a bunch of Norma factory 10mm ammo dated from the 1980's when the 10mil was gaining ground. I shot a few dozen rounds in my G20 and noticed strong variability in recoil pulse as well as a couple of split and bulged cases. Assuming higher than normal pressures due to welding I decided to pull bullets and save the cases/primers for reloading.
Initially I went with an inertia bullet puller but many of the bullets were so stuck I broke the first puller and then began developing tendinitis in my wrist working with the second from the continuous pounding to get the bullets to move. I switched to a home made collar and plyers setup in the rock chucker and this worked better but was amazed how stuck many of the bullets were. So far have had about a 20% rim failures via tearing off the cases due to the bullets being so stuck.
I've reloaded some of the factory pulled brass with the factory primer and most of the primers wouldn't fire either, so whatever caused the bullets to seize screwed up the primers as well. Keep in mind this was Norma factory ammo purchased and stored in the original boxes in dry Colorado climate for over 30 years before coming to MT. My only theory for outside intervention would be if the ammo was stored on the floor of a garage during winter months where cold/warm temp. exchange might cause condensation to occur creeping into the cartridges.
So yeah, cold weld is thing as far as I'm concerned.
“Some ideas are so stupid that only intellectuals believe them.” ― G. Orwell
"Why can't men kill big game with the same cartridges women and kids use?" _Eileen Clarke
"Unjust authority confers no obligation of obedience." - Alexander Hamilton
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Joined: May 2008
Posts: 25,700 Likes: 45
Campfire Ranger
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Campfire Ranger
Joined: May 2008
Posts: 25,700 Likes: 45 |
Interesting topic and one more thing for us Loonies to obsess over. I can’t think of any of the hundreds of thousands of rounds I’ve fired that exhibited signs of cold weld. I’ve fired stuff from WWII without any problems, in fact most of the tracers still lit in 1942 mfg 30-06. 30 carbine from WWII and 45 acp. I don’t doubt that it’s a real thing, I just doubt that many of us will ever have an issue with it.
�Politicians are the lowest form of life on earth. Liberal Democrats are the lowest form of politician.� �General George S. Patton, Jr.
--------------------------------------------------------- ~Molɔ̀ːn Labé Skýla~
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Joined: Jan 2009
Posts: 1,862 Likes: 2
Campfire Regular
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OP
Campfire Regular
Joined: Jan 2009
Posts: 1,862 Likes: 2 |
I went ahead and order the Redding graphite lube to put inside the necks before seating bullets.
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Joined: Jan 2018
Posts: 1,390
Campfire Regular
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Campfire Regular
Joined: Jan 2018
Posts: 1,390 |
I still had sticky rounds after a year or so, in some cases, using the graphite lube. For sure my very clean case necks were a contributor. I have have recently gotten the sense that hornady one shot applied inside all the case necks might prevent sticky bullets a little better than graphite. Others might disagree.
I'm still trying to figure out how to get case lube off without cleaning the cases in some manner...
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Joined: May 2016
Posts: 61,013 Likes: 72
Campfire Kahuna
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Campfire Kahuna
Joined: May 2016
Posts: 61,013 Likes: 72 |
Oh gosh....look out for that Lottery Jackpot!!!
I am MAGA.
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Joined: Oct 2017
Posts: 990
Campfire Regular
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Campfire Regular
Joined: Oct 2017
Posts: 990 |
So would using nickel cases eliminating this from happening?
"You may all go to Hell, and I will go to Texas" - Davy Crockett
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